{
  "target_markers_xyz": [
    [
      4.607254448049533,
      1.2597792740591085,
      -0.14878850672313337
    ],
    [
      4.598752669758338,
      1.2758191511398485,
      0.059425325978894605
    ],
    [
      4.489848229137948,
      1.5317568494277347,
      -0.17830844082048292
    ],
    [
      4.479387058900928,
      1.5487064246287372,
      0.031451757585973406
    ]
  ],
  "target_center_xyz": [
    4.544124930936899,
    1.4042146546872016,
    -0.059241175054081996
  ],
  "description": "4 individual corner-reflector target markers ('CalibrationTarget-Marker 1..4'), mean over ~630 raw OptiTrack frames for this position, transform-corrected into the published radar-centered frame (see calibration/axis_convention.json). target_center_xyz is the corresponding transformed rigid-body centroid."
}